Pith Number

pith:ULWO5VFH

pith:2019:ULWO5VFH6DXBED4GVZOCNH5XNQ

not attested not anchored not stored refs pending

Koalja: from Data Plumbing to Smart Workspaces in the Extended Cloud

Ewout Prangsma, Mark Burgess

arxiv:1907.01796 v1 · 2019-07-03 · cs.DC · cs.MA · cs.NI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ULWO5VFH6DXBED4GVZOCNH5XNQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:41:35.037878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2eceed4a7f0ee120f86ae5c269fb76c2549968156b947048c17a288e04dd0f7

Aliases

arxiv: 1907.01796 · arxiv_version: 1907.01796v1 · doi: 10.48550/arxiv.1907.01796 · pith_short_12: ULWO5VFH6DXB · pith_short_16: ULWO5VFH6DXBED4G · pith_short_8: ULWO5VFH

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ULWO5VFH6DXBED4GVZOCNH5XNQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a2eceed4a7f0ee120f86ae5c269fb76c2549968156b947048c17a288e04dd0f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ac71617b512b3c47221cd73f2f42f104188d56962ed605dda67523542d17a7c",
    "cross_cats_sorted": [
      "cs.MA",
      "cs.NI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2019-07-03T08:52:42Z",
    "title_canon_sha256": "1351b164a23f369b72debb9585f4aadcab3fa1923fde7492e779dca667d92c2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.01796",
    "kind": "arxiv",
    "version": 1
  }
}